fix org babel gnuplot loading

settings/org-settings.el

@@ -797,7 +797,10 @@ nil the return value is nil"
   :commands (gpl-file gpl-term gpl-prologue)
   :init
   (with-eval-after-load 'org
-    (add-to-list 'org-babel-load-languages '(gnuplot . t)))
+    (add-to-list 'org-babel-load-languages '(gnuplot . t))
+    (org-babel-do-load-languages
+     'org-babel-load-languages
+     org-babel-load-languages))
   :config
   ;; gnuplot config for own org export projects, used in preamble
   (defvar gnuplot-init-light "reset ; \

settings/plot-settings.el

@@ -22,6 +22,7 @@
   (setq graphviz-dot-preview-extension "svg")
   (setq graphviz-dot-view-command "open %s"))
 
+;; !!! SEE `ob-gnuplot' in `org-settings'
 (use-package gnuplot
   :commands gnuplot-mode
   :mode "\\.gp\\'")